Drinking Water Supply Device Cleaning Cycle
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Solution Overview
Problem
Drinking water supply devices often have debris and bacteria accumulation in the water paths, requiring effective cleaning methods to maintain sanitary conditions.
Innovation Solution
A drinking water supply device with a cabinet, valves, and modules for purified, cold, and hot water, along with a guide pipe and controllers to facilitate cleaning by alternating water pressures and temperatures, ensuring thorough path washing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If water passes through the cabinet continuously without cleaning, then water supply efficiency is maintained, but debris and bacteria accumulate in the water paths
Solution Approach 1:
The system implements periodic cleaning cycles where the cabinet is disconnected from the water supply temporarily to allow hot water to flow through and clean the internal paths. This periodic interruption prevents continuous debris accumulation while maintaining overall water supply functionality through scheduled maintenance operations.
2Reliability
If hot water is used for cleaning, then cleaning power is improved, but hot water extraction may occur during user access
Solution Approach 1:
The system dynamically switches between different operational modes: during normal user access, cold water is supplied for safe drinking; during scheduled cleaning cycles, hot water is activated to provide enhanced cleaning power. The controller manages this dynamic transition, ensuring hot water is only used when the cabinet is disconnected and no user access is occurring.
Solution Approach 2:
The system uses feedback control to monitor the operational state and water temperature. When cleaning mode is activated, the controller detects the disconnection state and enables hot water flow. During normal operation, the system detects user access and prevents hot water extraction, ensuring safety while maintaining cleaning effectiveness when needed.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The device effectively cleans the water paths, improving sanitary conditions and cleaning power through dual-step washing with different water types and pressures, preventing hot water extraction during user access.
Implementation Method 1
a second hot water module provided in the case, heating externally supplied water
Implementation Method 2
a cold water module provided in the cabinet, cooling externally supplied water
Data Source
AI summary
The present invention provides a method for controlling a drinking-water supply device, the method comprising: a first step of connecting a guide pipe of a case separated from a cabinet to form a channel through which water moves from the case to the cabinet; a second step of supplying the cabinet with hot water heated by a second hot water module included in the case; and a third step of supplying the cabinet with water which has not passed through the second hot water module included in the case, wherein a first hot water module, included in the cabinet, for heating water is not driven in the second step and the third step.